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Our Home Planet
Earth, our home planet, is the only planet in our solar system known to harbor life - life that is incredibly diverse. All the things we need to survive exist under a thin layer of atmosphere that separates us from the cold, airless void of space.

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Why Follow the Water
Topic: Astrobiology: Got Life?, Water in the Solar System
Grade Level: 5-8, 9-12
Body: Earth, Mars
Mission: Earth Science (Earth), Mars Recon Orbiter (Mars), Phoenix (Mars)

Short Description: Students investigate several physical properties of liquid water to better understand why we think water is important for life. An extension activity investigates the connection between liquid water and plant productivity on Earth.

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Why Follow the Water
Topic: Astrobiology: Got Life?, Water in the Solar System
Grade Level: 5-8, 9-12
Body: Earth, Mars
Mission: Earth Science (Earth), Mars Recon Orbiter (Mars), Phoenix (Mars)

Short Description: Students investigate several physical properties of liquid water to better understand why we think water is important for life. An extension activity investigates the connection between liquid water and plant productivity on Earth.

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